1993 Isuzu Truck Misses over 55mph

Tiny
JAZZMANXX
  • MEMBER
  • 1993 ISUZU TRUCK
  • 4 CYL
  • 2WD
  • MANUAL
  • 12,500 MILES
I have a 1993 Isuzu PU 2.3 4cyl engine with approximately 125,000 miles. Over 55 mph the engine hesitate or misses. How can I repair this? Thanks
Thursday, August 26th, 2010 AT 10:14 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Lack of acceleration, chugging, hesitating, bogging, misfiring etc. Could be caused by one of the following below:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard it.
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Thursday, August 26th, 2010 AT 7:28 PM

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